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Finding the Fourth Proportional to 845.24, 1,268 and 260.22

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Solution

The fourth proportional to 845.24, 1,268 and 260.22 is: 390.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.24 : 1,268 = 260.22 : x
  2. Step 2: Convert to fraction form
    845.24/1,268 = 260.22/x
  3. Step 3: Cross multiply
    845.24x = 1,268 × 260.22
  4. Step 4: Simplify right side
    845.24x = 329,958.96
  5. Step 5: Solve for x
    x = 329,958.96/845.24
  6. Step 6: Final answer
    x = 390.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.